Brecon Beacons
Includes all higher summits in the southern half of Wales: the Bannau Brycheiniog / Brecon Beacons National Park, southern Cambrian Mountains and highest Preseli hills.
Wednesday's Forecast
Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Mild
Air temperature above freezing to highest summits. May feel pleasantly warm on lower ground, but take appropriate layers. Feeling chilly if exposed to wind.
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Moderate breeze, locally gusty
A noticeable breeze, feeling cool where exposed on tops. Locally may be gusty, but unlikely to affect walking progress. 15-25mph.
Frequent or persistent rain
Steady rain fairly persistent, occasionally heavy, rather wet underfoot.
Mild
Air temperature above freezing to highest summits. May feel pleasantly warm on lower ground, but take appropriate layers. Feeling chilly if exposed to wind.
Viewing Forecast For
Brecon Beacons
Wednesday 22nd May 2024
Last updated
Tue 21st May 24 at
4:05PM
Summary for all mountain areas
Low pressure drifting in from the east will bring scattered thundery bursts of rain, developing into increasingly widespread rain, sustained heavy rain setting in for eastern Scotland and Pennines. Cloud filling in across most hills and winds generally strengthening.
Headline for Brecon Beacons
Rain heavy at times, risk thunder; wind increasing, feeling cool.
How windy? (On the summits)
Northerly, gradually strengthening from 15mph after dawn, to 30-35mph evening.
Effect of the wind on you?
As wind strengthens will increasingly impede ease of walking on higher areas and wind chill will become considerable.
How Wet?
Intermittent rain, risk local thunder.
Bursts of rain, in places frequent, possibly heavy and thundery.
Cloud on the hills?
Extensive on higher tops
Cloud base rising through morning; by late morning, fragments here and there on higher slopes but most summits cloud free. In rain will deteriorate, as cloud forms widely above 500m, locally much lower.
Chance of cloud free summits?
60%
Sunshine and air clarity?
Little or no sunshine. Hazy, and visibility deteriorating markedly where raining.
How Cold? (at 750m)
10C, but as wind increases feeling below 5C, by evening 2C.
Freezing Level
Above the summits
Viewing Forecast For
Brecon Beacons
Thursday 23rd May 2024
Last updated
Tue 21st May 24 at
4:05PM
How windy? (On the summits)
Northwest or westerly, 20 to 30mph, risk stronger gusts for a time.
Effect of the wind on you?
Marked wind chill and walking strenuous against the wind on higher exposed areas.
How Wet?
A few showers
Patchy rain at first, most likely mid Wales. Risk of one or two showers forming.
Cloud on the hills?
Gradually clearing
Cloud blanketing the mountains widely post dawn. The cloud base will rise toward upper slopes, then clearing highest tops.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Mostly cloudy, some sun breaking through. Visibility starting poor if in rain, improving to be very good.
How Cold? (at 750m)
5 to 7C. Wind chill in stronger speeds feeling below freezing.
Freezing Level
Above the summits.
Viewing Forecast For
Brecon Beacons
Friday 24th May 2024
Last updated
Tue 21st May 24 at
4:05PM
How windy? (On the summits)
Westerly 10 to 15mph.
Effect of the wind on you?
Mostly small
How Wet?
Showers possible
Risk of scattered showers forming, moving eastwards, tending to clear.
Cloud on the hills?
Lifting above tops
Banks of cloud around some higher slopes in the morning generally all lifting above hills by afternoon.
Chance of cloud free summits?
70%
Sunshine and air clarity?
Fairly cloudy start, sun may increasingly develop from west. Visibility very good.
How Cold? (at 750m)
6 to 8C
Freezing Level
Above the summits
Planning Outlook
A slow-moving area of low pressure will leave areas of rain and showers later this week, plus varied banks of low cloud across the mountains, feeling cool. Improving at least temporarily into the weekend as pressure rises for a time, becoming warmer, but southerly winds will strengthen ahead of lowering pressure over the Atlantic, likely to move in by early next week to bring changeable conditions, rain at times, most frequent western Scotland.